Ventilator.



WILLIAM J. LINDEMEYER, OF STAPLETON, NEW YORK.

VENTILATOR.

Specification of Letters Patent.

Patented Oct. 29, 1912.

Application filed January 3, 1911. Serial No. 600,604.

To all whom t may concern Be it known that I, WILLIAM J. LINDE- MEYER, a citizen of the United States, and residing at Stapleton, Staten Island, in the county of Richmond and State of New York, have invented certain new and useful Improvements in ventilators, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to ventilators and particularly to devices of this class used in connection with, or forming a part of, sky light oasings or Ventilating fines or tubes of any kind or class which open, outwardly or upwardly, through the roof construction of a building of any kind or class and is an improvement upon the construction set forth in my formerv Patent No. 978,175 Dec. 13, 1910 and the reissue of the same No. 13,239 dated May 9, 1911. The object thereof is to provide an improved device or apparatus of this class which involves a vertically movable hood adapted to cover or close the casing of a skylight or a Hue, tube or similar device used for the purpose of ventilation, and which is provided with automatic devices by which constant pressure or force is exerted to raise the hood to a predetermined height and supported at said height, and with handoperated devices for pulling said hood down so as to close the casing, tube or flue, and for locking said hood in the closed position or at any desired point of adjustment above said casing, tube or flue; a further object being to provide a device of the class specified with fusible connections or devices whereby, in the case of a lire, t-he automatic support or supports of the hood will be released so as to cause the automatic closing of the hood; and with these and other objects in view the invention consists in a device or apparatus con structed as hereinafter described andy claimed.

' verse section on the line 343 of Fig. 1, and

and, Fig. 7 a side view of a tool or implement used in adjusting the hood of the ventilator and the use of which is indicated in dotted lines in Fig. 1.

In'Figs. 1, 2 and 5 of the accompanying drawing, l have shown at a the casing of a skylight which may be either circular or rectangular in form, in horizontal section, or said casing may represent a Ventilating flue or tube of any kind or class and, in the practice of my invent-ion, I secure therein a transverse support o which, in the form of construction shown, is provided centrally with an oblong opening b2 and at the opposite sides of the top of said transverse support and centrally thereof are projecting keepers b3, as clearly shown in Figs'. Q and 3, and these keepers b3 are provided centrally with projecting ears b4. I also provide a hood o which is secured to a verticallv movable bar or member d composed of two'parts d2 which pass down through the keepers b3, and between the lower ends of which is placed a block d3, whereby the said parts (Z2 of the har or member l are held parallel at all points and pivoted in the top portion of the bar or member d as shown at el* is a lock arm e which passes downwardly through the opening b2 in the transverse support b, and in which said locking arm is free to swing.

The locking arm e is provided on one side face thereof with a plurality of teeth e2, and mounted in the one end of the opening o2 in the support b is a vertically arranged screw f on which is mounted a catch block f2 provided with a tooth adapted to engage the teeth e2 on the arm e, and the lower end of said screw is provided with a rectangular head f3 to which a wrench of any kind may be applied and by turning said screw the catch block f2 may be raised or lowered, as will be readily understood.

The vertically movable bar or member d, or the^-"separate parts Z2 thereof, are pro vided'with projecting ears d5 as shown in Fig. 2,and' spiral springs g are secured to the ears -b ofthe keepers o3 and to the ears d5, as clearly shown in said figure. The lower ends of the springs g are passed through the ears Z5 and are provided with fusible heads or nuts g2 for the purpose hereinafter' described. The lower ends of the parts (Z2 of the vertically movable bar or member (l are connected by a transverse pin (ZG, and I also provide a tool or implement L comprising a handle portion provided at one end with a laterally directed hook' h2 and an oppositely directed head h3, and this tool or implement is used in connection with the vertically movable bar or member (Z for pulling down said bar or member and the hood c and also for manipulating the locking arm c, as indicated in Fig. l and as hereinafter described.

The springs g in the normal position of the parts shown in Figs. l and 2, with the hood c elevated are contracted, and if at any time a tire should occur in a buildingV provided with my improved ventilator device or apparatus, the nuts or heads g2 by which said springs are connected with the ears (Z5 would be fused, and the connection between said springs and the vertically movable bar or member (Z will be broken and said bar or member and the hood c would drop into the position shown in dotted lines in Fig.l l, and the casing, flue or tube a would be closed as will be readily understood.

After the above operation, if it should occur, the bar or member (l and hood c may be raised by hand and the connection between the springs g and the ears Z5 may be again made and the parts will then be in the position shown in Figs. l and 2, and the bar or member (Z and hood c may be raised and lowered by hand, if desired, and said hood may be adjusted into any desired position so as to regulate the amount of air passing through the casing, tube or flue o, or said hood may be entirely lowered, as shown in dotted lines in Fig. l, so as to close said casing, flue or tube.

rI`he operation of the locking arm c is to hold the bar or member Z and hood c at any` desired point of elevation or adjustment, and in lowering said bar or member and hood by hand, I employ the tooll shown in Fig. 7, the hook h2 of which is engaged with the pin du, and when this is done the said tool may be manipulated so as to force the head 72,3 thereof against the lower end of the locking arm c and force said arm out of engagement with the catch block f2 after which the bar or member l and hood c may be raised to any desired point or lowered, as will be readily understood, and the lower end of the locking arm c in order to facilitate this operation is curved outwardly as clearly shown in Fig. 4. Y

The transverse support Z) may be secured in the casing, flue or tube a in any desired manner, and the object of providing the ver tically adjustable catch block f2 is to permit of the attachment and operation of the movable parts of the apparatus regardless of the position in which the bar or member (Z is placed, itbeing understood that said catch block f2 may be adjusted vertically into any desired position and the arm c will engage therewith at any point of adjustment thereof.

In Figs. 4, 5 and G, I have shown a modiiication in which I substitute weights for the springs g, and with this exception, the construction and operation of the modification shown in Figs. ll, 5 and 6 is exactly the same as the construction and operation of the parts of the apparatus shown in Figs. l, 24 and 3. In this modification, I secure to the ears (i5, cords which are passed over pulleys Z secured to the top of the support b, and these cords are connected with a weight 3 which, in the form of construction shown, normally rests on a support 4, and the weight 3 is provided with side keepers 5 through which are passed vertically arranged guide rods G connected with said support 4, and with a transverse support 7 secured to the bottom of the support 7). The connection between the cords and the weight 3 is made byl means of pins secured to said cords and passed loosely through said weight and the lower ends of which are provided with fusible nuts It will be understood, that the normal position of the parts of this form of my improvedventilating apparatus is that shown in Figs. 4 and 5, in which the hood c is in its raised posi tion, and if at any time a. fire should occur, the nuts j? would be fused and the pins j would pull out of the weight 2 and the ver tically movable bar or member (I and the hood c would drop into the position shown in dotted'lines in Fig. el, and the casing, flue orA tube mwould be closed; but with said parts in the position shown in full lines in Figs. l and 5, the vertically movable member (Z and hood c may be raised and lowered by hand exactly the same as with the constructionshown in Figs, l, 2 and 3.

In Figs. 4, 5 and 6, I have shown only the parts which are necessary to illustrate the modification, but it will be understood,

as hereinbefore stated, thatI all the operative parts employed in the construction shown in Figs. 1 to 3 inclusive are also employed in the modification.

It will be understood that the weight 3 normally holds the hood c in its elevated position and serves as a counter-balance for said hood,vand this form of construction is particularly designed for use in connection with skylights and similar structures of large transverse dimensions, and while I have shown the weight 3 as connected with and suspended immediately below the casing a, it will be understood that said weight may be located at or suspended at a distance from said casing if desired, and the size and weight of said counter-balance will depend on the size or dimension of the casing a and hood c. I also, in practice, place in the `opening b2 in the support b a spring ,t

which bears on the locking arm e and operates to force said arm into contact with the catch block f2 at all times but this spring will not interfere with the manipulation of said arm by the tool h as hereinbefore described.

Having fully described my invention,what I claim as new and desire to secure by Letters Patent, is

1. In a Ventilating apparatus of the class described, a casing or flue, a transverse support mounted therein and provided with a vertically adjustable catch block, a Vertically movable member mounted in connection with said support and extending above and below the same and provided at its upper end with a hood, automatic means for moving said movable member vertically, and a locking arm pivoted at the upper end of said member and extending downwardly below said support, said arm being provided with teeth in a vertical alinement and adapted to engage said catch block.

2. In a Ventilating apparatus of the class described, a casing or flue, a transverse support mounted therein and provided with a vertically adjustable catch block, a vertically movable member mounted in connection with said support and extending above and below the same and provided at its upper end with a hood, and a locking arm pivoted at the upper end of said member and extending downwardly below said support, said arm being provided with a Vertical series of teeth adapted to engage said catch block, means for automatically forcing said movable member upwardly and holding it in raised position, said means and said movable member being joined by devices including a fusible means securing two of said connecting devices together.

3. In a Ventilating apparatus of the class described, a iue or casing, a support having an opening through the same secured transversely therein, a vertically movable member mounted in connection with and to be guided by said support, said movable member consisting of two parallel parts one on each side of said support, a hood connected with the upper end of said member, a locking arm pivoted at the upper end of said member and extending downwardly through said support provided on one side with a vertical series of teeth, and a vertically adjustable catch block mounted within the opening in said support and adapted to engage said teeth.

4. In a Ventilating apparatus of the class described, a casing or flue, a transverse support having an opening therethrough secured therein, a vertically movable member mounted in connection with and to be guided by said support and extending above and below the same, said movable member being provided at its upper end with a hood, automatic devices normally tending to force said member and hood upwardly and hold them in a raised position, a locking arm provided with a vertical series of teeth and extending through said support, a catch block to be engaged by the teeth of the locking arm, and a screw in the opening in said support to adjust the said catch block vertically.

5. In a Ventilating apparatus of the class described, a casing or flue, a transverse support secured therein, a vertically movable member consisting of two parallel parts on each side of said support and extending above and below the same and provided at its upper endwith a hood, automatic devices normally operating to force said member and hood upwardly and hold them in a predetermined position, said automatic devices being connected with each part of said movable part, each of said connections including fusible joinings, the fusion of which permits said member and hood to drop and close said casing or flue, said Vertically movable member and said support being also provided with an adjustable catch block and a locking arm having a Vertical series of teeth to engage said catch block whereby the said member and hood may be adjusted and held in any desired position, and the melting of the fusible part will permit these parts to drop to their lowest position.

6. In a Ventilating apparatus of the class described, a casing or flue, atransverse support having an opening through the same mounted therein, a vertically movable member consisting of two parts one on each side of said support and guided thereby, a hood mounted on the upper end of said movable member, a catch block and a revoluble screw for adjusting said block vertically in the opening in said support, a locking arm adapted to engage said catch block extending through said support and a spring within the opening in said support to press said locking arm into engagement with said catch block.

In testimony that I claim the foregoing as my invention I have signed my name in presence of the subscribing witnesses this 31st day of December, 1910.

WILLIAM J. LINDEMEYER.

Witnesses:

C. E. MULREANY, E. G. BROMLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

